Microglial cathepsin E plays a role in neuroinflammation and amyloid β production in Alzheimer's disease.

ABSTRACT: Regulation of neuroinflammation and β-amyloid (Aβ) production are critical factors in the pathogenesis of Alzheimer's disease (AD). Cathepsin E (CatE), an aspartic protease, is widely studied as an inducer of growth arrest and apoptosis in several types of cancer cells. However, the function of CatE in AD is unknown. In this study, we demonstrated that the ablation of CatE in human amyloid precursor protein knock-in mice, called APP^NL-G-F mice, significantly reduced Aβ accumulation, neuroinflammation, and cognitive impairments. Mechanistically, microglial CatE is involved in the secretion of soluble TNF-related apoptosis-inducing ligand, which plays an important role in microglia-mediated NF-κB-dependent neuroinflammation and neuronal Aβ production by beta-site APP cleaving enzy

SUBMITTER: Xie Z 

PROVIDER: S-EPMC8920437 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature